Summary from Wikipedia

Born in Germany and raised in Austria, Rindt started motor racing in 1961. Switching to single-seaters in 1963, he was successful in both Formula Junior and Formula Two. In 1964, Rindt made his debut in Formula One at the Austrian Grand Prix, before securing a full drive with Cooper for 1965. After mixed results with the team, he moved to Brabham for 1968 and then Lotus in 1969. It was at Lotus that Rindt found a competitive car, although he was often concerned about the safety of the notoriously unreliable Lotus vehicles. He won his first Formula One race at the 1969 United States Grand Prix. ...